Title :
Cylindrical concave diffraction grating utilising thin silicon chip
Author :
Fujii, Yuka ; Minowa, J.
Author_Institution :
NTT Yokosuka Electrical Communication Laboratory, Yokosuka, Japan
Abstract :
A unique manufacturing method for concave diffraction gratings is proposed. Also, a cylindrical concave diffraction grating was manufactured with a multimode slab waveguide. A silicon plane diffraction grating was bent cylindrically in this method. The efficiency of the concave diffraction grating was 82% at a 1.3 ¿m wavelength. The efficiency was about the same as that of the plane diffraction grating.
Keywords :
diffraction gratings; frequency division multiplexing; optical communication equipment; optical waveguides; silicon; 1.3 micron wavelength; Si plane diffraction grating; cylindrical concave diffraction grating; dielectric waveguides; multimode slab waveguide; multiplexes; optical transmission;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810651
